US sociologist.
He followed a socio-psychological approach to the understanding of society.

To get away from one's working environment is, in a sense, to get away from one's self; and this is often the chief advantage of travel and change.

The mind is not a hermit's cell, but a place of hospitality and intercourse.

We are born to action; and whatever is capable of suggesting and guiding action has power over us from the first.

If we divine a discrepancy between a man's words and his character, the whole impression of him becomes broken and painful; he revolts the imagination by his lack of unity, and even the good in him is hardly accepted.